your best bet would be to do an css animation for the fishi.
But at the start of the app, all content is being loaded and initialized, so basically JS is keeping the browser busy. It might be best to do very slow steps, so that it does not matter if the browser skips some steps in the animation.

your best bet would be to do an css animation for the fishi.
But at the start of the app, all content is being loaded and initialized, so basically JS is keeping the browser busy. It might be best to do very slow steps, so that it does not matter if the browser skips some steps in the animation.